Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Characiformes
(Characins) > Crenuchidae
(South American darters) > Characidiinae
Etymology: Characidium: Diminutive of Charax, -akos = a fish without identification (Ref. 45335).
Environment / Climate / Range
Freshwater; benthopelagic. Tropical, preferred ?
South America: known only from the type locality in the headwaters of Caraguatá River, upper Uruguay River drainage.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.1 cm SL male/unsexed; (Ref. 36884)
Morphology | Morphometrics
soft rays: 7 - 9. Roundish black marks on the pelvic, dorsal and anal fins; a black band along the distal margin of anal and pelvic fins; a black band along the distal margin of anal and pelvic fins in adult males (band also present but fainter and narrower in juveniles and females); enlarged anal fin with rounded distal profile in adult males; fins brightly colored with orange or red chromatophores in live adult males; reduction of adipose fin, which may be very small or even absent; lateral line complete or at least extending well beyond the 12th scale of series.
In a small river at 650 m altitude.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Buckup, P.A. and L. Hahn, 2000. Characidium vestigipinne: a new species of Characidiinae (Teleostei, Characiformes) from Southern Brazil. Copeia 2000(1):150-155. (Ref. 36884)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
Fisheries: of no interest
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.4 ±0.3 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .